#5B6FF9
Closest named color: Cornflower (#6A79F7). oklch(60.2% 0.205 272.5), rgb(91, 111, 249).
Aa
Black text reads best on this color (5.08:1).
About this color
#5B6FF9 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.205 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.033 away. Black text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.08:1 |
| White text | 4.12:1 |
Values
| HEX | #5B6FF9 |
| RGB | rgb(91, 111, 249) |
| HSL | hsl(232, 93%, 67%) |
| OKLCH | oklch(60.2% 0.205 272.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #5B6FF9 | 4.12:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #5B6FF9 | 5.08:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #5B6FF9 text on white | 4.12:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #5B6FF9 text on black | 5.08:1 | AA | Lc -33.7 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FE
oklch(93.6% 0.029 273.1)
-
Step 200
200
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#ABBDFF
oklch(80.9% 0.096 272.3)
-
Step 400
400
#8198FF
oklch(70.7% 0.153 272.5)
-
Step 500
500 (this color)
#5B6FF9
oklch(60.2% 0.205 272.5)
-
Step 600
600
#4D5CF3
oklch(55.6% 0.224 272.4)
-
Step 700
700
#3F4AD3
oklch(49.1% 0.207 272.5)
-
Step 800
800
#333EAB
oklch(42.7% 0.172 272.3)
-
Step 900
900
#2C3787
oklch(37.8% 0.133 272.4)
-
Step 950
950
#19214F
oklch(27% 0.085 272.1)
#5B6FF9 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0084FE | 0.066 |
| Deuteranopia (no green cones) | #0076F6 | 0.057 |
| Tritanopia (no blue cones) | #0090A9 | 0.172 |
| Achromatopsia (no color) | #7D7D7D | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B6FF9
#5B6FF9
oklch(60.2% 0.205 272.5)
- #9B7E00
#9B7E00
oklch(60.3% 0.123 92.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #5B6FF9, closest first.
No curated palette has a color within ΔE 0.04 of #5B6FF9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.033
- Medium Slate Blue #7B68EE ΔE 0.047
- Clear Blue #247AFD ΔE 0.048
- Neon Blue #4361EE ΔE 0.049
- Royal Blue #4169E1 ΔE 0.050
- Cerulean Blue #056EEE ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.069
- Bright Blue #0165FC ΔE 0.070
Use #5B6FF9 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.